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<html lang="zh-CN">

<head>
    <meta charset="UTF-8" />
    <title>14_堆栈结构-案例练习</title>
</head>

<body>
    <script>
        var arr = [1, 2, 3];
        var arr1 = arr;
        arr = [1, 22, 3];
        console.log(arr);
        console.log(arr1);
    </script>
</body>

</html>